解题方法
1 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)当
时,设函数
的最小值为
,若
均为正数,且
,求
的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f221c9185ea740a252fa82ea7a6ea6b.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cbeede118c407a800b05757b9a1393e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b095c3b3d32619c3e0c581f79cd8f48e.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1d86b4ad722d7b720603eba9d330fd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143c384e3ed4f411015eadb97737fbfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ae24688d4c45aad43e9af0b7bbfda6b.png)
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解题方法
2 . 已知函数
.
(1)当
时,求不等式
的解集;
(2)若
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05a80ec5a4f605ed97c3a8ae94b1d38.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e94f16d5ed858699bfea5039a7bf8ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8a33c8e64e3650140754b22a5596c6c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17301687840079dd0d8b1b5c8c2a1e84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/602383633a21f2618c1d82512fa9cf08.png)
您最近一年使用:0次
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3 . 已知函数
.
(1)求不等式
的解集;
(2)若
的最小值为
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ab2df0ae1f2a2530b7bef95bb2e842d.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bfbe2eb6c502d3d304bbe3c95b54061.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3910a0f217d8109b9467f740fc84a73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c925be255ca736a53b24d13ddede1a86.png)
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2022-11-26更新
|
342次组卷
|
6卷引用:广西贵港市百校2023届高三上学期11月联考数学(理)试题
2022高三·全国·专题练习
名校
解题方法
4 . 已知函数
,A={x|t≤x≤t+1},B={x||f(x)|≥1},若集合A∩B只含有一个元素,则实数t的取值范围是____ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f48f7e55bddac14d6884332dc5b9422.png)
您最近一年使用:0次
解题方法
5 . 已知函数
且
为非零常数.
(1)当
时,求
的解集;
(2)当
时,求证
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2bbe90515c45a493917ccfdc473f0456.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b550ee821ee1838384835e81fc34b67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/188281cc0c7af6e95c32b9bbb94ffc21.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e10e1c43b86a8cd4360ca9b57232164.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5849c56025eae3d81c3d501e9d7e2c3.png)
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6 .
.
(Ⅰ)解不等式:
;
(Ⅱ)
最大值为
,不等式
在
上恒成立,求实数
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c2ebf34c9884c4cf38761e2dd32dd3d.png)
(Ⅰ)解不等式:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/baebc9a2de421368791a1a85b971a302.png)
(Ⅱ)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73ddca106b9b68bd9a664b295e165f21.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6571de509d1fa17e22c3bfb7fd8aff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7 . 已知函数
.
(1)求函数
的最小值
;
(2)若正实数
满足
,且
对任意的正实数
恒成立,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d28cf5f34ad31fd15e45e2272b013a89.png)
(1)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
(2)若正实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b15bd315b801f71bc30b8d772098614.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5467def2b4c930a78c6a3f2cd6c611b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7efbd2066b32b6cefb2d115f491f60dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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2022-09-20更新
|
380次组卷
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3卷引用:福建省安溪一中、养正中学、惠安一中、泉州实验中学2016-2017学年高二下学期期末联考数学(理)试题
名校
8 . 已知函数
.
(1)求不等式
的解集;
(2)函数
的最大值为
,若正实数
,
,
满足
,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0022a58c849092f40b37f0d4bd27c491.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/502416314c8c26f8442e639ea6a5db13.png)
(2)函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/741275cddc65d12f4db0c63fc804db10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af2820e6e888da175da63fb59e0990c8.png)
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2021-03-06更新
|
459次组卷
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3卷引用:广西柳州市2021届高三第一次模拟考试数学(文)试题
名校
解题方法
9 . 已知函数
.
(1)求不等式
的解集;
(2)当
时,
恒成立,求实数a的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd65345dec765bd06d1d9e7e8900a67e.png)
(1)求不等式
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba2e9cc1a9b2dcdd194d1e109e87ca27.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da6d82d173ad18cc040e94c925b5ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3152f75506019925eab55ea3a0adde5a.png)
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2021-03-05更新
|
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2卷引用:河北省衡水第一中学2021届全国高三第二次联合考试(1)文科数学试题
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10 . 已知函数f(x)=|x-1|+|x-a|.
(1)若a=-1,求f(x)≥3的解集;
(2)若
,f(x)≥2恒成立,求实数a的取值范围.
(1)若a=-1,求f(x)≥3的解集;
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d96b743603ab1c10330622f16db78dbe.png)
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2020-10-24更新
|
302次组卷
|
2卷引用:云南省红河州第一中学2021届高三年级理科数学第一次联考试题